图6-4 : Lvrt特性 - Delta RPI H3A Operation And Installation Manual

Grid-tie transformerless solar inverter
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6.3 低压穿越 (LVRT)
根据CEI 0-21, 8.5.1
当电压下降现象发生时,为了避免与网络不正常脱离,总功率超过6千瓦的发电系统必
须符合一定的功能性需求,就是国际上一般通称的低压穿越LVRT(Low Voltage Ride
Through)。
Ugrid /Un
110%
100%
90 %
85 %
40 %
0%
200
0
图6-4 : LVRT特性
实功与虚功控制及低压穿越(非必要选项)
1
2
3
400
81
time ( ms )

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